CIA Director John Brennan wants you to think the Paris attacks were Snowden’s fault — the “hand wringing” over mass surveillance has ended his agency’s ability to “thwart” terrorists attacks “before they’re carried out.” There’s only one problem with that: there’s no evidence that the US’s mass surveillance programs have ever prevented a major terrorist attack.

An internal, unclassified DHS document confirms this: “terror arrests between January 2014 and September 2015 linked to ISIS were largely of people trying to travel abroad, provide material support, or plan attacks that were essentially imaginary.”